XML 41 R30.htm IDEA: XBRL DOCUMENT v3.21.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Stock Based Compensation) (Narrative) (Details)	6 Months Ended
	Feb. 28, 2021 item
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Number of types of equity awards issued	3

X

- Definition

Number Of Equity Awards Offered

+ References

No definition available.

+ Details

Name:	psmt_NumberOfEquityAwardsOffered
Namespace Prefix:	psmt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration